LEGO Classic Space set 894 (Mobile Ground Tracking Station / Mobile Signals Centre), released 1979.

This is the European/international version of the US set 452. It has ~76–79 pieces (sources vary slightly on counting) and 1 minifigure. Original retail was about $7–7.50. Designed by Jens Nygaard Knudsen, it is a compact ground vehicle from the first wave of Classic Space.

Detailed Review

Design and build

The set builds a light-gray six-wheeled (or eight-wheeled depending on counting) tracking truck with a detachable trailer. The main vehicle has an open cab with steering wheel, a rear control compartment that opens via hinged doors, transparent yellow windows, a green computer-screen slope, Classic Space logo bricks, and a rooftop antenna assembly. The trailer carries a large inclinable dish antenna with a transparent green 1x1 round brick as a sensor/light.The build is classic late-1970s LEGO: mostly bricks, plates, hinges, and a few specialty pieces. It is straightforward and quick (under an hour for most adults). Play features stand out for the era—the opening rear cabin, tilting trailer dish, and spinning/rotating rooftop antennas made from transparent round shields give more interactivity than many similarly sized sets of the time. The trailer can be unhitched for “radar triangulation” play.Playability and display

Excellent for its size and age. It fits the peaceful exploration aesthetic of Classic Space perfectly and looks good displayed next to larger sets like the Galaxy Explorer or alongside other small vehicles (886, 889, 891, 897). The white astronaut adds instant recognizability.

Strengths

  • Strong play features relative to piece count.
  • Iconic Classic Space look and white spaceman.
  • Includes unique/rare elements (especially the transparent shields).
  • High nostalgia factor; well-regarded by Classic Space collectors.

Weaknesses

  • Very small and simple by modern standards.
  • Some parts (especially the thin transparent shields and printed gold logos) are fragile or prone to wear/damage over decades.
  • No stickers or complex building techniques.

Community reception

Brickset community scores and Lugnet ratings are strong (around 4.3–4.8 / 5 or ~89/100). Reviewers frequently call it one of the better small Classic Space sets for play value and “mystique.”

Overall rating: 8.5 / 10

An outstanding small set for Classic Space fans and collectors. It punches above its piece count in charm, play features, and rarity of certain elements. Not essential if you only want big flagships, but highly recommended if you collect the early 1979 wave or complete white-astronaut sets.

Collector’s Inspection Guide – What to Check

When buying used/complete or sealed examples, carefully inspect these points (condition dramatically affects value):

  1. Transparent round shields (Part 3876, Trans-Clear) – The two rooftop “radar dishes.” These are the single most important and fragile unique elements. Check for cracks, chips, cloudiness/yellowing, broken studs, or missing pieces. Many examples have at least one damaged or replaced.
  2. Printed Classic Space logo bricks (3004p90 in Light/Old Gray) – Two 1x2 bricks with the gold planet/rocket logo. Gold printing wears easily; look for bright, complete gold vs. faded/white moon.
  3. White Classic Space astronaut – Full figure with air tanks, correct early helmet (thin chin strap / 3842a style), and sharp torso printing. Check for yellowing of white plastic, cracked helmet, faded print, or incorrect later-style parts.
  4. Green computer slope and transparent yellow windows – Verify correct colors and no heavy scratches.
  5. Hinges and opening rear doors – Functionality of the 1x4 and 1x2 hinges; no broken clips.
  6. Trailer dish and green 1x1 round – Dish should tilt freely; green brick present and clear.
  7. Wheels/tires and overall light-gray plastic – Check for playwear, stress marks, or significant yellowing/discoloration of the gray.
  8. Completeness and authenticity – Original instructions preferred. Box condition matters a lot for sealed or complete-with-box examples. Watch for modern replacements of rare parts.
  9. Overall cleanliness and odor – Vintage sets often spent decades in attics; check for dust, mold, or smoke smell.

Mint or near-mint examples with intact clear shields and strong gold printing command significant premiums.

Rare / Notable Elements and Approximate Current Market Values (late 2026)

Values fluctuate; these are approximate based on BrickEconomy, BrickOwl, eBay, and recent listings (used/good to excellent condition unless noted). Always check current BrickLink/BrickOwl for exact sales.

ElementNotesApprox. Value (each, used)
3876 Trans-Clear Round Shield (x2 in set)Exclusive to 894/452 in this color. Extremely sought-after and fragile.$14–25+ (excellent/clear); lower if cloudy/chipped; pair can exceed $40–50
White Classic Space Astronaut (sp006 / similar)Iconic; value depends heavily on print and helmet condition.$40–55+ complete (excellent)
3004p90 Light Gray Classic Space logo brick (x2)Gold print condition critical.$4–9 (strong gold); less if faded
Green computer screen slopeNice period piece.$1–3
Transparent yellow 1x2 windows / other specialtyCommon but period-correct.Low single dollars
Full used complete setNo box/instructions often.$55–70 typical
New/sealed setScarce; box condition critical.$420–480​​


The transparent shields are the true “key” rare parts of this set—many collectors hunt specifically for them. The white astronaut and logo bricks add solid secondary value. Parted-out value of a complete set is driven heavily by those three items.

Bottom line for collectors: 894 is a charming, playable slice of early Classic Space history. Prioritize intact clear shields and strong printing if buying for display or investment. It remains one of the more desirable small sets from the 1979 lineup.

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